/Engine/Plugins/Experimental/GeometryFlow/Source/GeometryFlowCore/Public/GeometryFlowGraph.h
TODO: this needs more work need option to opportunistically cache, ie on multi-use of output, or when we can't re-use anyway (this is currently what NeverCache does?)
namespace UE { namespace GeometryFlow { enum ENodeCachingStrategy { Default = 0, AlwaysCache = 1, NeverCache = 2, } } }